Jupiter,Saturn or Uranus?

Mathematics

1 answer:

masya89 [10]3 years ago

5 0

Answer:

Jupiter :)

Step-by-step explanation:

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Jose wants to put a fence around his rectangular garden. His garden measures 31 feet by 33 feet. The garden has a path around it

vlabodo [156]

3 feet width is added to both sides .
so the dimensions become 34 feet and 36feet
hence the fencing length required or the perimeter= 2(l+b)
= 2( 34+36)
= 2(70)
= 140feet fence

4 0

3 years ago

Subtract - 2x - 10 from 10x2 + 3.

krok68 [10]

Answer:

10x2 + 2x + 13.

Step-by-step explanation:

10x2 + 3 - (-2x - 10) (Note you have to put the -2x - 10 in brackets).

= 10x2 + 3 + 2x + 10 (Distributing the negative over the brackets).

= 10x2 + 2x + 13.

8 0

3 years ago

The length of time to complete a door assembly on an automobile factory assembly line is normally distributed with a mean of 6.7

hram777 [196]

We need to work out the z-value of each question to work out the probability

Question a)

We have
X = 5 minutes
The mean, μ = 6.7 minutes
Standard deviation, σ = 2.2 minutes
z-score = (X - μ) / σ = (5 - 6.7) / 2.2 = -0.77

We want to find the probability of z < -0.77 so we read the z-table for the value of z on the left of -0.77 we have the probability P(z< -0.77) = 0.2206

The table is attached in picture 1 below

The probability of assembly time less than 5 minutes is 0.2206 = 22.06%

Question b)

z-score = (10-5) / 2.2 = 2.27

Reading the z-table for P(z<2.27) = 0.9884
The table reading is shown in the second picture below

The probability the assembly time will be less than 10 minutes is 0.9884

We can use this information to find the probability of the assembly time will be more than 10 minutes = 1 - 0.9884 = 0.0116 = 1.16%

Question c)

The value of z between 5 minutes and 10 minutes is

P(-0.77<z<2.27) = P(z<2.27) - P(z< -0.77)
P(-0.77<z<2.27) = 0.9884 - 0.2206 = 0.7678 = 76.78%